Herbs procumbent, stoloniferous. Internodes of stolons 4-6 cm. Leaves in a rosette, petiolate; leaf blade spatulate, 2-3 cm × 4-6 mm, sparsely strigose, base cuneate, decurrent, margin 1- or 2-undulate-dentate, ciliate, apex widely obtuse to rounded. Floral leaves similar. Flowers sky blue, solitary in apical axils. Calyx campanulate, ca. 4 mm, 10-veined; teeth oblong, ca. 1/2 as long as calyx, obtuse, ciliate, pilose. Corolla ca. 1.2 cm, tubular; tube straight, pilose, villous annulate inside; upper lip straight, 2-lobed, with obtusely triangular lobes; lower lip 2-3 × as long as upper lip, with middle lobe narrowly obovate-triangular, base truncate, apex emarginate; lateral lobes quadrate, almost as long as middle lobe. Nutlets ca. 2 mm, areole to 2/3 of nutlet length.

Jiangsu, Taiwan [Japan].